2017 July 16, Brandon Nowalk, “Chickens and dragons come home to roost on Game Of Thrones (newbies)”, in The Onion AV Club‎[1]:

Plucky old Walder Frey gathers his family for a feast and toasts to their massacre of the Stark family. He compliments their bravery in stabbing a pregnant woman and her fetus to death. As every last Frey man swigs their special wine, Walder hypes the cunning it took to invite guests into your home and ambush them. But then things take a turn, the men starting to keel over as Walder seems to admonish them for leaving certain threads hanging. At last the room is empty but for Arya Stark, holding Walder Frey’s face, and a couple girls she leaves alive to spread the legend. “Winter came for House Frey.”

To counsel against wrong practices; to caution or advise; to warn against danger or an offense; — followed by of, against, or a subordinate clause.

“You needn’t stray off too far in doin’ it,” his partner admonished. “If that pack ever starts to jump you, them three cartridges’d be wuth no more’n three whoops in hell. Them animals is damn hungry, an’ once they start in, they’ll sure get you, Bill.”

Sir Arthur Conan Doyle in The Valley of Fear

Well, that's because he daren't trust you. But in his heart he is not a loyal brother. We know that well. So we watch him and we wait for the time to admonish him.

The Book of Ecclesiastes in The Bible (KJV)

Better is a poor and a wise child than an old and foolish king, who will no more be admonished.

The Book of Ecclesiastes in The Bible (KJV)

And further, by these, my son, be admonished: of making many books there is no end; and much study is a weariness of the flesh.